
\begin{table}
\caption{Mesh refinement statistics: Low thrust transfer problem}
\label{mesh_stats_Low th}
\renewcommand{\tabcolsep}{0.15cm}
\tiny
\begin{tabular}{llllllllllll}
Iter&DM&M&NV&NC&OE&CE&JE&HE&RHS&$\epsilon_{\max}$&CPU$_\mathrm{a}$ \\ \hline \\
1&TRP&80&803&653&1968&362&181&0&57558&2.208e-03&5.560e+00\\
2&TRP&98&983&797&118&119&110&0&23205&2.263e-03&4.060e+00\\
3&H-S&108&1404&984&145&146&141&0&47012&1.180e-03&7.650e+00\\
4&H-S&116&1508&1056&209&210&185&0&72660&3.514e-04&1.119e+01\\
\hline
CPU$_\mathrm{b}$ &-&-&-&-&-&-&-&-&-&-&8.250e+00\\
-&-&-&-&-&2440&837&617&0&200435&-&3.671e+01\\
\end{tabular}
\newline \\ \emph{Key}: Iter=iteration number, DM= discretization method, M=number of nodes, NV=number of variables, NC=number of constraints, OE=objective evaluations,  	              CE = constraint evaluations, JE = Jacobian evaluations, HE = Hessian evaluations, RHS = ODE right hand side 		      evaluations, $\epsilon_{\max}$ = maximum relative ODE error, CPU$_\mathrm{a}$ = CPU time in seconds spent by NLP algorithm, 		      CPU$_\mathrm{b}$ = additional CPU time in seconds spent by PSOPT
\normalsize
\end{table}